Textile false twist devices



Feb. 1, 1966 F. SCRAGG TEXTILE FALSE TWIST DEVICES 5 Sheets-Sheet 1 Filed Sept. 24, 1965 Fig: 1.

' Feb. 1, 1966 F. SCRAGG 3,232,036

" TEXTILE FALSE TWIST DEVICES VI 19 22 V 21 21 I I I Fig: 2.

Feb. 1,1966

FL SCRAGG TEXTILE FALSE TWIST DEVICES Filed Sept. 24, 1965 14 5 21 E 21 Q 12 19 I 24 as k "I 25 Fig:

5 Sheets-Sheet 5 Claims priority, application Great Britain, Sept. 26, 1962,

36,494/62; Nov. 13, 1962, 42,795/62. 8 Claims. '(Cl. 7-'-77.3)

This invention provides improvements in or relating to textile false twist devices.

According to the invention, there is provided an insert member adapted to hold a. twist pin and to be secured in or to a false twist tube of a textile yarn crimping machine so as to be removable therefrom. v v

Preferably the member comprises a disc-like cap portion having a central throughway and adapted to be secured in or to an end of a false twist tube and two projections extending in substantially parallel relationfrom one surface of the disc-like portion defining between them and together with the said throughway a space for the passage of yarn and each havinga recessin which a twist pin can be located. r c c Such an insert member can be removed from a false twist tube when the twist pin becomes unserviceable due to wear, and replaced by a similar member with aserviceable pin.

A twist pin may be secured in the member by adhesive. The member may, however, be formed from a mouldable and settable substance, such as nylon, and a twist pin may be incorporated into the member during the moulding process. v U H One embodiment of the invention will now be described with reference to the.accompanyingdrawings inwhich j FIGURE 1 is a perspective view of a member having a twist pin in position for assembly,

FIGURE 2 is a perspective veiw of a retaining member, and

FIGURE 3 is a section through one end of a twist tube with an assembled twist pin holding insert member in position.

The member comprises a disc-like cap portion 11 having a central throughway 12 and adapted to be secured in the end of a false twist tube 13 (FIGURE 3). Two projections 14 extend in substantially parallel relation from the upper surface of the disc as shown in the drawings and define between them and together with the said throughway a space 15 for the passage of yarn. Each projection 14 has a recess 16 in which a twist pin can be located. In the drawings, the twist pin 17 is shown in position, and it is retained thereby fixing with a suitable adhesive. To assist in the retention of the twist pin 17, a retaining member 19 is provided (FIGURE 2) which comprises a pair of side members 21 which are adapted to slide into the recesses 16 and have hollowed ends 22 which abut the twist pin 17, the side members 21 being joined by an annulus 23 which fits into the central throughway. The retaining member 19 is also fixed in position with adhesive.

The insert member and the retaining member 19 are preferably made of nylon or a similar substance. The use of nylon permits assembly with a twist tube in the manner shown in FIGURE 3, where the assembly has been effected by compressing the cap-portion 11 so as to be capable of passing a lip 24 on the inside of the rim of the twist tube end, inserting the compressed cap portion 11, and allowing it to expand into an interference fit with the side wall 25 of the twist tube end.

One method of removing a nylon insert member from a twist tube for replacement is to dissolve it in a suitable solvent.

United States Patent, .0

ice

The twist pin holding insert member may be arranged to hold a twist pin with its axis inclined to the axis of rotation. In' the embodiment-described with reference to the accompanying drawings, .the recesses 16 inthe projections 14,can be of different lengths, and theside members 21 of the retaining member,19' of corresponding dimensions to accommodate such an inclined twist pin.

What I claim is: j

1. In a false-twist assembly, the combination of a falsetwist tubehaving an end; an insert member releasably secured in said tube adjacent said end and having a portion projecting outwardly beyondsaid end, said projecting portion havingan axial recess; a twist pin extending across said recess in saidprojecting portion and being connected to said portion at opposite ends of said pinand in a predeterminedposition, a portion of said insert member extending across, the respective ends of said pin; and a retaining member operatively connected to said insert memprojections projecting from said first annular portion outwardly of said tube, said insert member being formed with a pair of grooves facing each other and extending :in axial direction through said first annular portion and said projections, respectively, and endingshort of the ,free ends of said projections; a substantially cylindrical ltwist pin extendingacross :the space between said projections and having respective end portions each received in one of said grooves and rigidly secured therein in a predetermined position; and a retaining member for retaining said twist pin in said predetermined position, said retaining member comprising a second annular portion received within :said first annular portion of said insert member and having anaxial bore, and further comprising a pair of projecting portions respectively received in said grooves of said insert member and engaging said end portions of said twist pin from below in a direction transversely of the elongation of the pin so as to maintain the latter in said predetermined position.

3. In a false-twist assembly, the combination of a falsetwist tube having an end; an insert member releasably secured in said tube adjacent to said end and having an axial recess; a twist pin extending across said recess and being connected to said insert member at opposite ends of said pin and in a predetermined position; and a retaining member received within said insert member and having portions engaging the respective ends of said twist pin so as to retain the same in said predetermined position.

4. In a false-twist assembly, the combination of a falsetwist tube having an end; a resiliently compressible insert member releasably secured in said tube adjacent to said end and having an axial recess; a twist pin extending across said recess and being connected to said insert member at opposite ends of said pin and in a predetermined position; and a retaining member received within said insert member and having portions engaging the respective ends of said twist pin so as to retain the same in said predetermined position.

5. In a false-twist assembly, the combination of a falsetwist tube having an end; a resiliently compressible insert member releasably secured in said tube adjacent to said end and having an annular portion and a pair of spaced projections projecting from said annular portion and defining an axial recess; a twist pin extending across said recess and being connected to said projections at opposite ends of said pin and in a predetermined position; and a retaining member received within said insert member and having a pair of portions engagingthe respective ends of said twist pin so as to retain the same in said predetermined position.

6. In a false-twist assembly, the combination of a falsetwist tube having an end; a resiliently compressible insert member releasably secured in said tube adjacent to said end, said insert member having an annular portion and a pair of spaced projections projecting therefrom, said insert member further being provided with a pair of grooves facing each other and extending in axial direction through said annular portion and said projections and ending short of the free ends of the latter; a twist pin extending across the space between said projections and having respective end portions each received in one of said grooves; and a retaining member connected with said insert member and including a pair of portions comple:

mentary to said grooves of said projections and respectively received therein, said portions engaging said end portions of said twist pin transversely of the elongation of the latter so as to maintain said pin in a predetermined position.

7. In a false-twist assembly, the combination of a falsetwist tube having an end and a recess inwardly spaced from said end; an elongated insert member releasably secured in said tube adjacent to said end and comprising a securing portion located within said tube formed with a protrusion engaging said recess and a projecting portion projecting from said end of said tube and having a free end face formed with an axially extending cutout so as to form a pair of transversely spaced axially extending securing legs; and a twist pin extending across said cutout spaced from the bottom thereof, and being secured with opposite ends to the respective securing legs.

8. In a false-twist assembly, the combination of a false-twist tube having an end; an elongated insert member releasably secured in said tube adjacent to said end and comprising a securing portion located within said tube and a projecting portion projecting from said end of said tube and having a free end face formed with an axially extending cutout so as to form a pair of transversely spaced axially extending securing legs; and a twist pin extending across said cutout spaced from the bottom thereof, and being secured with opposite ends to the respective securing legs, said securing legs being formed with respective recesses extending in axial direction of said insert member and the ends of said twist pin being received in the respective recesses; and a retaining member operatively connected with said insert member and having a pair of projecting portions complementary to said recesses and received therewithin, said projecting portions engaging said ends of said twist pin transversely of the elongation of the latter for preventing movement thereof in axial direction of said insert member.

References Cited by the Examiner UNITED STATES PATENTS 2,223,362 12/1940 Federman 134-42 2,406,458 8/1946 Gerndt et al 134-42 2,436,632 2/1948 Crane 57-77.45 2,740,251 4/1956 Bierlin 57-773 2,753,679 7/ 1956 Von Schrnoller et al.

5777.3 X 2,777,276 1/1957 Klein 5777.3 2,826,892 3/1958 Gustafson 5777.3 2,893,198 7/1959 Schrenk et al 5777.3 3,091,910 6/1963 Steele 5777.33 3,152,436 10/1964 Dudzik et al 5777.45 X

FOREIGN PATENTS 925,261 5/1963 Great Britain.

MERVIN STEIN, Primary Examiner.

J. PETRAKES, Assistant Examiner. 

1. IN A FALSE-TWIST ASSEMBLY, THE COMBINATION OF A FALSETWIST TUBE HAVING AN END; AN INSERT MEMBER RELEASABLY SECURED IN SAID TUBE ADJACENT SAID END AHD HAVING A PORTION PROJECTING OUTWARDLY BEYOND SAID END, SAID PROJECTING PORTION HAVING AN AXIAL RECESS; A TWIST PIN EXTENDING ACROSS SAID RECESS IN SAID PROJECTING PORTION AND BEING CONNECTED TO SAID PORTION AT OPPOSITE ENDS OF SAID PIN AND IN A PREDETERMINED POSITION, A PORTION OF SAID INSERT MEMBER EXTENDING ACROSS THE RESPECTIVE ENDS OF SAID PIN; AND A RETAINING MEMBER OPERATIVELY CONNECTED TO SAID INSERT MEMBER FOR RETAINING SAID TWIST PIN IN SAID PREDETERMINED POSITION. 